B21D 43/023
Centering devices
Official title: {Centering devices, e.g. edge guiding}
B21D43/023 (Centering devices) appears on 61 US grants and 36 published applications in this corpus.
Search patents in B21D- Granted patents
- 61
- Published applications
- 36
- Assignees
- 44
- Inventors
- 100
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 3 |
| 2013 | 2 | 3 |
| 2014 | 1 | 3 |
| 2015 | 4 | 2 |
| 2016 | 3 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 3 |
| 2019 | 1 | 3 |
| 2020 | 2 | 4 |
| 2021 | 4 | 3 |
| 2022 | 3 | 3 |
| 2023 | 2 | 1 |
| 2024 | 3 | 1 |
| 2025 | 2 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Plate material supplying apparatus10 Mar 2026US 12,569,903 B2Sankyo Seisakusho Co.
- Blanking mold, blanking and stacking apparatus, and blanking method26 Aug 2025US 12,397,338 B2G-Tekt Corporation
- Guide pin connection24 Jun 2025US 12,337,369 B2Standard Lifters, Inc.
- Stock lifter assembly30 Apr 2024US 11,969,775 B2Standard Lifters, Inc.
- Adjustable joining machine9 Apr 2024US 11,951,524 B2BTM Corporation
- Blanking mold, blanking and stacking apparatus, and blanking method24 Jul 2025US 2025/0235919 A1G-Tekt Corporation
- Inside out spring plunger24 Apr 2025US 2025/0128368 A1Standard Lifters, Inc.
- Progressive Press Metal Mold11 Jul 2024US 2024/0226984 A1Kabushiki Kaisha F.C.C.
- Stock lifter assembly5 Oct 2023US 2023/0311190 A1Standard Lifters, Inc.
- Stock lifter assembly16 Jun 2022US 2022/0184684 A1Standard Lifters, Inc.
Most cited
By later US patents
- Stock lifter for progressive dies41US 4,326,402 A1982
- Stock lifter39US 4,282,736 ABlue Ridge Industrial Technologies, Inc. · 1981
- Sheet guide positioning apparatus21US 4,750,660 AIsowa Industry Co., Ltd. · 1988
- Apparatus for feeding bars through a bending or like processing station19US 4,681,210 AAoki Corporation · 1987
- Article retention system for transfer equipment17US 4,546,873 AThe Broken Hill Proprietary Company Limited · 1985